MongoDB的学习-安装与springboot的整合
mongoDB的学习：
1.mongodb 安装及使用
mongodb 安装及使用__mongodb安装使用
MongoDB社区下载
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配置环境变量，使在任意位置都可以执行bin下的exe程序
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配置完成后，这样就成功了。
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2.开始整合springboot+mongoDB
1.导入依赖
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-data-mongodbartifactId>
dependency>
2.添加mongodb配置yaml配置
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#mongodb配置
spring:
data:
mongodb:
host: localhost
port: 27017
# mongodb数据库名称
database: monge_demo
3.新增实体类对应mongodb的集合进行关系映射
package com.ljquan.test.pojo.mongoDB;
import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.Id;
import java.util.Date;
/**
* @className Article
* @Description 文章 用于mongodb的测试
* @Author ljquan
* @Date 2022-06-10 11:39:02
* @Version 1.0.0
*/
@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class Article {
/**
* 文章id
*/
@Id
private Long id;
/**
* 用户ID
*/
private Long userId;
/**
* 文章标题
*/
private String title;
/**
* 文章内容
*/
private String content;
/**
* 创建时间
*/
private Date createTime;
/**
* 更新时间
*/
private Date updateTime;
/**
* 点赞数量
*/
private Long thumbUp;
/**
* 访客数量
*/
private Long visits;
}
4.开始使用Mongodb和springboot整合
创建ArticleService接口
package com.ljquan.test.service.mongoDB;
import com.ljquan.test.pojo.mongoDB.Article;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* @className ArticleService
* @Description 服务条
* @Author ljquan
* @Date 2022-06-10 13:54:33
* @Version 1.0.0
*/
@Service
public interface ArticleService {
/**
* 插入文章
* 插入
*
* @param article 文章
* @return int
*/
int insertArticle(Article article);
/**
* 更新文章
*
* @param article 文章
* @return int
*/
int updateArticle(Article article);
/**
* 删除文章
*
* @param id id
* @return int
*/
int removeArticle(Long id);
/**
* 找到所有
*
* @param article 文章
* @return {@code List}
*/
List<Article> findAll(Article article);
/**
* 找到一个
*
* @param article 文章
* @return {@code Article}
*/
Article findOne(Article article);
/**
* 找到喜欢
*
* @param article 文章
* @return {@code List}
*/
List<Article> findLike(Article article);
/**
* 找到更多
*
* @param article 文章
* @return {@code List}
*/
List<Article> findMore(Article article);
}
创建实现类ArticleServiceImpl
package com.ljquan.test.service.mongoDB.impl;
import cn.hutool.core.date.DateUtil;
import com.ljquan.test.pojo.mongoDB.Article;
import com.ljquan.test.service.mongoDB.ArticleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.util.List;
import java.util.regex.Pattern;
@Service
public class ArticleServiceImpl implements ArticleService {
@Autowired
MongoTemplate mongoTemplate;
/**
* 插入文章
*
* @param article 文章
* @return int
*/
@Override
public int insertArticle(Article article) {
try {
article.setCreateTime(DateUtil.date());
mongoTemplate.insert(article);
return 1;
} catch (Exception e) {
e.printStackTrace();
return -1;
}
}
/**
* 更新文章
*
* @param article 文章
* @return int
*/
@Override
public int updateArticle(Article article) {
//通过query根据id查询出对应对象，通过update对象进行修改
Query query = new Query(Criteria.where("_id").is(article.getId()));
//更改信息
Update update = new Update().set("username", article.getTitle());
try {
mongoTemplate.updateFirst(query, update, Article.class);
return 1;
} catch (Exception e) {
e.printStackTrace();
return -1;
}
}
/**
* 删除文章
*
* @param id id
* @return int
*/
@Override
public int removeArticle(Long id) {
Query query = new Query(Criteria.where("_id").is(id));
try {
mongoTemplate.remove(query, Article.class);
return 1;
} catch (Exception e) {
e.printStackTrace();
return -1;
}
}
/**
* 找到所有
*
* @param article 文章
* @return {@code List}
*/
@Override
public List<Article> findAll(Article article) {
Query query = new Query(Criteria.where("_id").is(article.getId()));
return mongoTemplate.findAll(Article.class, article.getTitle());
}
@Override
public Article findOne(Article article) {
Query query = new Query(Criteria.where("_id").is(article.getId()));
return mongoTemplate.findOne(query, Article.class);
}
/**
* 模糊查询
*
* @param article 文章
* @return {@code List}
*/
@Override
public List<Article> findLike(Article article) {
//设置
Pattern pattern = Pattern.compile("^.*" + article.getContent().trim() + ".*$", Pattern.CASE_INSENSITIVE);
Query query = new Query(Criteria.where("content").regex(pattern));
return mongoTemplate.find(query, Article.class);
}
/**
* 找到更多
*
* @param article 文章
* @return {@code List}
*/
@Override
public List<Article> findMore(Article article) {
Query query = new Query(Criteria.where("content").is(article.getContent()));
return mongoTemplate.find(query, Article.class);
}
}
这里是最重要的，调用了刚刚导入进来的依赖，然后调用里面的接口实现整合
@Autowired
MongoTemplate mongoTemplate;
5.测试
@Autowired
ArticleServiceImpl articleService;
/**
* 测试发现相似
*/
@Test
public void testFindLike() {
Article build = Article.builder().content("7").build();
List like = articleService.findLike(build);
System.out.println(like.size());
like.forEach(article -> {
System.out.println(article.getContent());
}
);
}
/**
* 测试插入文章
*/
@Test
public void testInsertArticle() {
Article build = Article.builder()
.content("7")
.id(snowflake.nextId())
.createTime(DateUtil.date())
.thumbUp(9L)
.updateTime(DateUtil.date())
.build();
int i = articleService.insertArticle(build);
log.info("【article】= {} 插入成功", JSONUtil.toJsonStr(build));
}
/**
* 测试发现所有
*/
@Test
public void testFindAll() {
List all = articleService.findAll();
log.info(all + " ");
}
……
6.MongoDB数据库输出结果
2022-06-13 11:29:53.704 [main] INFO org.mongodb.driver.connection - Opened connection [connectionId{localValue:3, serverValue:15}] to localhost:27017
2022-06-13 11:29:53.781 [main] INFO com.ljquan.test.TestApplicationTests - [Article(id=1, userId=1535106423837560832, title=wwigzpxj10u8hda1zs8l更新之后的标题, content=mmcxzb9ookzl6jegxnrp53hicmo0t6onch0mcwlqpk6s2kqzpgie0pqrcb2ps9v3ut40ypqwht9kgwj6fjovpc3bmt2j8vx5qpmtud9uxslp04pe0oy9etu4018xe9xe7nl7t2bmojkj9nre6m8odj, createTime=Fri Jun 10 11:47:47 CST 2022, updateTime=Fri Jun 10 13:36:59 CST 2022, thumbUp=0, visits=0), Article(id=1535134388424151040, userId=1535134388424151041, title=ok94ysuekznpuwmi7puo, content=vvbfxw4mn0538vso42aktg6botfn17ro8bc0z58byb0mk22wfimbxcpgo273m7bzj6qs31kamu8p777kze6sarj8feywu1i77332ajauatu2rmi1aj96zmaukpqug6ovskws4xfq6wfrh8m3ut3iig, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454208, userId=1535134388495454209, title=wqy8byd12n8p2pekl26n, content=bbzvqheql3qpwk9b6ju2r59srzekpvy4q2qglpxuyzc70nclfwulhzxmuqugoof7xx3jpfzhy1kkvklg9mqd6gqmqub39vht7fz9mf7ncwot3uazfzcgvuvm3icii3o5zcizlufrep6z9jau4likvb, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454210, userId=1535134388495454211, title=bgpu1j0cmkswc02c3ghl, content=g8s6hf1wwipxg59ygqezn0h0e9wbynw2ju1ad3b4dd71188gaqu01oohbdhj4rchukf25gl8x4jiw2jhxtrkbexxobmvcn70lcos12gdzyrjmbkhxcruxdvectx0gpaxvnf3fjuwu28udyzo69q7nl, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454212, userId=1535134388495454213, title=co8khj1kh4dw8fw1oxht, content=2b2ta1w52olvaavmvhmtlsgynkeux8ps87h64sjqmdy6eud0l5zh81yihtegegsvwxkbp5pamcldmwynrdiswfli75z4lcau5v210mxjlmat78rdloqsqfobwhr1f5cxo0217c7g8mqzeglzklf0rf, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454214, userId=1535134388495454215, title=qp0cvb1rzfafoxscnbgr, content=rdhw4ys2mwsfzaa0vzdp7p1ufs1tk29yypdsiwvbnx7j2pglkljlkerd1myamiqr2r3o858qjjxzhra94073xft66ynri3up3nwhut9o4zkkkdtvz5nfmsyzb4usqr3e4u66ym2fhfuvczwbrz181p, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454216, userId=1535134388495454217, title=gdykjbb6hipcsdkukdza, content=1616z4cpwq4cse7q19qj1ft7j3vegn03b2mfmrsjseylh8mv1qc3ntybiebb40ifubx8yr4muxlkvjb8dwi08flplg97mi63a95zxmq3rfam4lc5ckub6cih1cui9mse8qn28jbm3mtvu5ewv5xcd0, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 2022, thumbUp=0, visits=0), Article(id=1535134388495454218, userId=1535134388495454219, title=sbybn8n133q9ahh6hys4, content=z6zpdwvegw0o8txuo5ze1un316qulemjgvodctl0rkea40y0wfccf19nfmxqgk2w1ivfg0rzu11zot1hmhx08dqxpzsrwxts26oglz8mf4ojeupuqryiqohfyvnu5eg4uni4pklxrmmuzowi9net64, createTime=Fri Jun 10 13:38:54 CST 2022, updateTime=Fri Jun 10 13:38:54 CST 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Article(id=1535175698518511616, userId=null, title=null, content=7, createTime=Fri Jun 10 16:23:03 CST 2022, updateTime=Fri Jun 10 16:23:03 CST 2022, thumbUp=9, visits=null), Article(id=1536184056574775296, userId=null, title=null, content=7, createTime=Mon Jun 13 11:09:54 CST 2022, updateTime=Mon Jun 13 11:09:54 CST 2022, thumbUp=9, visits=null)]
16:20:22 CST 2022, thumbUp=9, visits=null), Article(id=1535175698518511616, userId=null, title=null, content=7, createTime=Fri Jun 10 16:23:03 CST 2022, updateTime=Fri Jun 10 16:23:03 CST 2022, thumbUp=9, visits=null), Article(id=1536184056574775296, userId=null, title=null, content=7, createTime=Mon Jun 13 11:09:54 CST 2022, updateTime=Mon Jun 13 11:09:54 CST 2022, thumbUp=9, visits=null)]
以上是把mongodb数据库的信息输出出来，测试结束。